Changes between Version 5 and Version 6 of Ticket #4747, comment 6


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Timestamp:
Aug 26, 2020, 2:21:35 AM (2 years ago)
Author:
ezimanyi

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  • Ticket #4747, comment 6

    v5 v6  
    2121* call  4K + 4K times the function ST_Distance for each couple of trips.
    2222As you can imagine, for such kind of manipulations we really need to access directly the liblwgeom library. The situation is much more challenging for analyzing aviation data obtained from, e.g.,
    23 https://developer.laminardata.aero/ since in this case we need to do the computations using the PostGIS geography type and its associated functions. For this use case we needed to implement the functions ST_ClosestPoint, ST_ShortestLine, ST_LineSubstring, ST_LineInterpolatePoint, and ST_LineLocatePointfunctions for geography
     23https://developer.laminardata.aero/ since in this case we need to do the computations using the PostGIS geography type and its associated functions. For this use case we needed to implement the functions ST_ClosestPoint, ST_ShortestLine, ST_LineSubstring, ST_LineInterpolatePoint, and ST_LineLocatePoint functions for geography
    2424https://github.com/MobilityDB/MobilityDB/blob/develop/point/src/geography_functions.c
    2525and we plan to submit a PR to PostGIS soon.